39928073648445 has 30 divisors (see below), whose sum is σ = 71574997013982. Its totient is φ = 21294904791312.

The previous prime is 39928073648429. The next prime is 39928073648497. The reversal of 39928073648445 is 54484637082993.

39928073648445 is a `hidden beast` number, since 3 + 99 + 28 + 0 + 7 + 36 + 48 + 445 = 666.

39928073648445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 31942458918756 + 7985614729689 = 5651766^2 + 2825883^2 .

It is not a de Polignac number, because 39928073648445 - 2⁴ = 39928073648429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 127007742 + ... + 127321728.

Almost surely, 2^{39928073648445} is an apocalyptic number.

It is an amenable number.

39928073648445 is a deficient number, since it is larger than the sum of its proper divisors (31646923365537).

39928073648445 is an frugal number, since it uses more digits than its factorization.

39928073648445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627991 (or 313995 counting only the distinct ones).

The product of its (nonzero) digits is 1254113280, while the sum is 72.

The spelling of 39928073648445 in words is "thirty-nine trillion, nine hundred twenty-eight billion, seventy-three million, six hundred forty-eight thousand, four hundred forty-five".